Swordtail

Swordtails are carnivorous flying creatures from the skies of Jupiter. They almost look like legless pterodactyls with smooth, dark yellow skin. On each wing are three claws. Their bird-like heads have a 'beak' made of cartilage. Their most remarkable feature is their razor-sharp tails, in which they slice open the gas bags of Jellyblimps using Jupiter's own gravity, then herd of Swordtails catching and devouring the poor Jellyblimp.